luminance

1 brightness created by light reflected from a surface <the emerald had a pure, icy green luminance> Synonyms burnish, gloss, shine, luster (or lustre), polish, sheenRelated Words glare, gleam, glimmer, glint, glisten, glow, shimmer; blink, flicker, sparkle, twinkle; illumination, irradiation; iridescence, luminescence; brilliance, luminosity, radiance, radiancy, refulgence; finish, glazeNear Antonyms dimness, dinginess, dirtiness, drabness, dullness (also dulness), flatness; grayness, paleness; cloudiness, gloom, murkiness, obscureness, obscurity, somberness

2 the quality or state of having or giving off light <the landscapes of the French painter Claude Lorraine have a unique luminance that no other artist has quite captured> Synonyms brightness, brilliancy, candor, dazzle, effulgence, illumination, lambency, lightness, brilliance, luminosity, luminousness, luster (or lustre), lustrousness, radiance, refulgence, splendorRelated Words blaze, flare, flash, flicker, light; fluorescence, incandescence, luminescence; burnish, gloss, polish, sheen, shine, shininess; fire, flame, glare, glow; flash, gleam, glimmer, glint, glisten, glitter, scintillation, shimmer, sparkle, twinkleNear Antonyms dimness, gloominess, somberness; cloudiness, haziness, murkiness, obscureness, obscurity; colorlessness, grayness, lackluster, paleness, shadiness, shadowinessAntonyms blackness, dark, darkness, dullness (also dulness), duskiness